Why is conduction not an efficient way to move heat through most of the Earth?
A) Radioactive decay generates too much heat.
B) Molecules are too far apart to transfer heat via that method.
C) Rocks are poor conductors of heat.
D) Radiation is the most efficient way to move heat through the interior.
Answer: C
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The type of cell division in which resulting cells contain one chromosome from each pair is
called _______. Fill in the blank(s) with the appropriate word(s).
What was not the goal of Admiral Zheng He's explorations?
a. Show kindness to people in distant places b. Display the powers of the Ming Dynasty c. Distribute treasures d. Conquer people in distant places
How many molecules are present in one mole of glucose, C6H12O6?
A) 6.92 ´10-26 B) 3.34 x 10^21 C) 6.02 x 10^23 D) 1.44 x 10^25
Seattle, Washington is located at 47.5°N latitude and Boston, Massachusetts is located at 42.22°N latitude, so Seattle is farther north than Boston. Both cities border oceans, the Pacific Ocean in the case of Seattle and the Atlantic Ocean in the case of Boston. Both cities are in close proximity to a segment of the global thermohaline circulation system, the Japanese Current for Seattle and the Gulf Stream for Boston. Seattle, though, rarely experiences winter snowfall, whereas Boston often does. Why?
A. Winter storms approach Boston from the east driven by the warm thermohaline Gulf Stream. B. Winter storms approach Boston from the west that draw cold air southward from the Arctic. C. Winter storms approach Seattle from the west driven by the warm thermohaline Japanese Current. D. "A" and "B" combined provide the answer.